Imperfect: used when saying something happened in the past but more than once.

AR Verbs IR/ER Verbs Ir Ver Ser

aba ábamos ía íamos iba ibamos veía veíamos era éramos

abas ías ibas veías eras

aba aban ía ían iba iban veía veían era eran

Ex. Viajaba en el autobús cada día.

I rode the bus every day.

Iban a la piscina cada jueve.

They went to the pool every Thursday.

Present Perfect: used to describe what someone has or have done

haber + past participle (ado/ido)

he hemos

has

ha han

Ex. Victor ha comprado la guitarra.

Victor has bought the guitar.

Hemos esquiado en los Estados Unidos.

We have skied in the United States.

Present: used when describing what is happening now

AR Verbs ER Verbs IR Verbs

o amos o emos o imos

as aí es eís es ís

a an e en e en

Irregular yo verbs

caber quepo

caer caigo

dar doy

saber sé

traer traigo

ver veo

hacer hago

poner pongo

valer valgo

ver veo

concocer conozco

conducir conduzco

traducir traduzco

Irregulars in all or most forms

With verbs irregular roots such as tener will also be irregular and will use the same basic forms as their roots. An example of this would be contener. It uses the same forms as tener, but with "con" infront of everything.